My experience is the 70/30 filing and causee of the divorce are related, or even more so. Especially today, everyone one of those reasons are also true for women and they get the added prize of divorce bonuses while men do not. Social media has really screwed up relationships in general. One example personal to me of many is the pastor that married my wife and I. He was married 27 years, had 3 kids all under 18, wife found her HS sweetheart online and just left her whole family one afternoon while they were away for sports, to go be with him and she filed for divorce as soon as 366 days hit (1 year here).
I must agree with that. Several of my friends' DILs or SILs hooked up with someone online within a year of two of the big expensive wedding.
We have one in our family who kicked her husband of nearly 50 years to the curb over an out-and-out grifter she "met" online. The husband literally died from the shock, and she moved that bassterd into the marital house about ten minutes after the funeral. Her bringing a fox into the henhouse destroyed the unity of the extended Christian family (consisting of ten to twenty other married couples, depending on how many in-law couples show up at family events). Many tears have been shed by everyone but the happy couple. Some tolerate him being at family gatherings, and others are plain disgusted even being around him. Or her, either. I'm one of the latter.